Improvement in automatic telegraphic apparatus



2 Sheets--Sheet I.

INVENTOR.

Parented1an.19,ia75.

M GALLY Aut'nmatic-TelegraphicApparatus. No. 158,927.

WITNESSE S.

UNITED STATES PATENT AEEICE.

MERBITT GALLY, OF4 ROCHESTER, NEW YORK.

IMPROVEMENT IN AUTOMATIC TELEGRAPHIC APPARATUS.

,Specification forming part of Letters Patent No. 158,927, dated January19, 1875; application led Y May 11, 1874.

To all whom t may concern.-

Be it known that I, MERRITT G'ALLY', of

Rochester, in Monroe county and State of New York, have invented certainnew and useful Improvements in Telegraphic Apparatus; and I do herebydeclare that the following is a full and exact description thereof,reference being had to the accompanying drawings and to the letters ofreference marked thereon.

Figure 1 is a front view of an instrument showing the principal featuresof the invention. Fig. 2 is a plan of the transmitting, the interval,and lthe tripping circuits. Fig. 3 shows the arrangement of circuit S1S1 for a number or" instruments at a single office; Fig. 4, the same asFig. 3, the several instruments in connection withi' a singlemanipulator.

In ordinary automatic telegraphy much loss of time and labor isoccasioned by the disconnected steps through which the rnessage mustpass in its preparation before it is actually transmitted upon-the line.Twoor three operators are usually employed, with different instruments,upon a single message, one to perforate the message-strip, another towind the strip upon the bobbin, and a third to adjust the bobbin to thetransmitter and transmit the message. I

The delay occasioned by rehandling is especially apparent vwith shortmessages assigned to different destinations; and as a large proportionof telegraphic business is done in ten-word messages to be separatelytransmitted, the causes of delay mentioned become prominent.

The objects ot' my invention are, first, to perform automatically thechanges mentioned in the preparation'and transmission of messages, or toso connect the instruments as to bring them all into one, or under thecontrol of a single operator; and, secondly, to especially adapt theinstruments used not only to single, but also to multiplex telegraphy.

In Fig. 1, A B represent a perforating device, which is only partiallyshown, as any kind of perforator or instrument for otherwise preparingthevinessage-strip may be used to prepare the strip N for thetransmitter.

-All the other devices of Fig. 1 except A B belong to the transmittingor receiving portion of the instrument.

From the perforator AB the strip N passes directly to the transmitter,the iirst part of which is the wheel C and tripping circuit-connector DE.

This device must not be confounded with tween G and H, and the strip,lifting the light wheel D, closes a local circuit at E, through magnetK, and, acting upon lever J, lifts wheel F from wheel H by raising leverG, and thus stops the transmitting movement until it is again started bythe action of magnet L through the circuit S1 S1. This circuit S1 S1,when for multiplex telegraphy, is the interval-circuit, and is governedby an intervalpulsator, or is closed and broken by the operator atdesirable intervals, as the case may be.

This circuit may also lead to other instruments at the same officeconnected with other telegraphic lilies, as shown in Figs. 3 and 4, inwhich 132,133, and P1 represent different telegraphic lines withinstruments 'at theysame station. The several instruments arerepresented at Z Z1 Z2, either transmitters or receivers, or bothcombined.

Fig. 4 represents the same with a single manipulator, A2, for all thetransmitters or receivers, or for any desirable number of them. Thecircuit S1 S1 goes to all the instrument-s through S3, and to theirpoints for connection through S2.

It will be seen from the iigures that an operator at any one of theinstruments may connect the circuit S1 S1 throughv any other of theinstruments, or the one at which he is immediately operating, by makingconnection at 1, 2, or 3, as the case may be.

The wires l 2 3 may be connected directly with lever J of theirrespective instruments, and a slight movement of the wire actmechanically upon the lever, instead of using Lattery T2, if sopreferred. For example, if a number of lines or branch lines come intoan oi'lice, I make the circuit S1 S1 of each instrument in the officeextend to other instruments, so that an operator engaged upon one linecan, without leaving his position, control the transmission or receivingof messages on other lines th an the one on which he is directlyoperatin g. Thus he may have accumulated message matter in a number ofinstruments for a number of lines without opportunity to transmit any ofthem. While he is manipulating one i11- strument, if the time-signal isgiven for another instrument, he can, without leaving the work on whichhe is engaged, set otl the other message by the simple connection of itsinstrument-circuit S1 S1.

He may pass from one instrument to another and accumulate message matteras each case demands orA his time allows, and still always be ready totransmit from any at the proper signal without leaving his position.Instead of the circuit S1 S1, a mechanical connection may be made fromone instrument to another, and I do not wish to limit myself in theinvention to amere electric connection for this purpose, when connectinginstruments at a single station. instrument motor, and may be driven byanyL desired power. the transmitting or main-line circuit. It will beseen that the pertbratingoperatorcan accumulate his message-strip, andWheneveropportunity comes for itsk transmission, the accu'- mulationwill be taken up by the transmitter while he goes on perforating, eitherby the action of an interval pulsation or the simple connection of thecircuit S1 S1 by the perforating operator. For single telegraphy theoperator can always make his own connections, when `opportunity is givenon the line for his accumulated matter. For multiplex or intervaltelegraphy the circuit S1 S1 may be connected with the main line, andoperated by interval pulsations, with direct or reversed currents, asdescribed in my former patents; but in the present case I show anotherplan of working the circuit, as will be seen in Fig. 2. With speedyrecorders, the accumulation, consuming considerable time of theperforating operator, may be taken up by the transmitter during a veryshort interval. These short intervals will need to recur to eachinstrument only at comparatively remote periods, say ten Words, more orless. This will allow a number of operators along a line to beconstantly accumulating matter, which, at certain recurring intervals,will be taken up and passed on to the line in their proper order, if aline-pulsator is used for marking the proper intervals. Very greataccuracy,

however, is required in the adjustments of theinstruments.

If a number of operators The wheel W represents the.y

The circuit P1 P1 represents) can be successfully employedsimultaneously and constantly preparing message matter, all to betransmitted upon the single line, a second line-wire can be afforded tomark the 'intervals, and, being entirely independent in its action ofthe transmitting-line, can be made to mark the intervals with perfectaccuracy, with no necessary devices for unison. In Fig. 2 I show twocircuits for the entire line-P1, the transmitting circuit-wire, and S1the interval circuit-wire. Each circuit may have its own battery or bealternately thrown on to one battery by an alternating circuit-closer,as shown at X R T. These circuits correspond to the circuits of Fig. l,marked with like letters.

The instrument shown in Fig. 1 is used for recorder by substitutingchemically-prepared paper in place of the message-strip', ifelectrochemical record is desired. Any kind of registering or soundingdevice may, however, v

be used.

The perforator may be made to act by adjustment upon different stripsleading to different connected transmitters, all furnished withaccumulations at different times, with but one set of keys; or a singlemanipulation may -be made to punch a number of strips of like charactersimultaneously, leading to differenttransmitters for different lines. Ireserve such constructions, however, for future application.

In the instrument, Fig. l, the wheel F is driven by the motor W. Thelever G rocks upon a pivot at n. Wheel H is driven by friction fromwheel F when the wheels are in contact. LeverJ acts upon leverG by camaction, as shown atv a b. Lever J is pivoted at h, and is furnished witharmatures d and f for the electro-magnets K and L. I is an ordinarystylus, through which the circuit current of P1 passes to wheel H. Thetripping-circuit, which is automatically closed at E, is representedbyMl M. 4 The circuit S1 S1, when closed by the perforating operator,passes to an ordinary hammer-key, arranged with the keys of theperforator.

What I-claim as my invention, and desire to secure by Letters Patent, is

1. The combination, with a perforator for preparing message matter fortelegraphic transmission, and with atransmitter therefor, of anintermediate device, controlled in certain operations by the paperpassing from the perforator to the transmitter, and in turn controllingthe transmitter in its action, substantially as and for the purposespecified.

2. The transmitting or receiving mechanism, in combination with thecircuit S1 S1,

4. The tripping-circuit M M', with connector E, by means of which thetransmitting or receiving movement is interrupted by the tersion of theribbon N, substantially as specie f 5. The combination, with a mainlinetrensmitting wire and instruments therefor, Of an additional line-wire,for controlling the instruments of the transmitting-line es to theirintervals of transmission7 substantially its specied.

MERRITT GALLY.

Witnesses:

JOHN THOMSON, JOHN HAY.

